A fully automatic test bench for detecting electromagnetic reversing valves

Abstract

The present application relates to a full-automatic test bench for detecting electromagnetic directional control valves, belonging to the technical field of hydraulic component detection. It includes a base, and the base is a double-layer structure; a turntable, which is rotatably installed on the upper layer of the base; a plurality of clamping mechanisms, which are evenly distributed and fixedly installed at one end of the turntable away from the base, and a plurality of clamping mechanisms are all connected to a hydraulic mechanism, and the clamping mechanism is used to clamp the electromagnetic directional control valve; a hydraulic mechanism, which is fixedly connected to the base, and the hydraulic mechanism is used to provide the oil required in the test of the electromagnetic directional control valve. The present application has the effect of improving the detection efficiency of the electromagnetic directional control valve.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic component detection, and particularly to a fully automatic test bench for detecting electromagnetic directional control valves. Background Art

[0002] The electromagnetic directional control valve is the core control component of a hydraulic system. It realizes the oil circuit switching by driving the spool displacement with an electromagnet, and its performance directly affects the system response speed, pressure stability, and reliability.

[0003] After the electromagnetic directional control valve is produced, experiments need to be carried out to test the performance of the product. However, on a traditional test bench, the solenoid valve needs to be manually installed, and the single clamping takes 3 - 5 minutes; moreover, most devices only have a single test station, and the solenoid valves need to be tested one by one, and multi-valve parallel detection cannot be achieved. The test efficiency is limited by the manual operation rhythm, seriously affecting the detection efficiency of the electromagnetic directional control valve. Summary of the Invention

[0004] In order to improve the detection efficiency of the electromagnetic directional control valve, this application provides a fully automatic test bench for detecting electromagnetic directional control valves.

[0005] A fully automatic test bench for detecting electromagnetic directional control valves provided by this application adopts the following technical solutions:

[0006] A fully automatic test bench for detecting electromagnetic directional control valves includes a base, and the base is a double-layer structure;

[0007] A turntable, which is rotatably installed on the upper layer of the base;

[0008] Multiple clamping mechanisms, which are evenly distributed and fixedly installed on the end of the turntable away from the base, and the clamping mechanisms are used to clamp the electromagnetic directional control valve;

[0009] A hydraulic mechanism, which is fixedly connected to the base, and multiple clamping mechanisms are all connected to the hydraulic mechanism. The hydraulic mechanism is used to provide the oil required in the test of the electromagnetic directional control valve;

[0010] A protection mechanism, which is fixedly installed on the end of the turntable away from the base, and the protection mechanism is used to prevent oil leakage;

[0011] A control mechanism, which is connected to the base. The control mechanism includes a controller, and the controller is fixedly installed on the upper layer of the base; the control mechanism is used to control the hydraulic mechanism and the clamping mechanisms;

[0012] The clamping mechanism includes:

[0013] An electro-hydraulic push rod, the fixed end of the electro-hydraulic push rod is fixedly installed on one end of the turntable close to the center of the circle, the movable end of the electro-hydraulic push rod is along the radial direction of the turntable, and the electro-hydraulic push rod is electrically connected to the controller;

[0014] A diaphragm spring, one end of the diaphragm spring is fixedly connected to the movable end of the electro-hydraulic push rod;

[0015] A movable clamping block, one end of the movable clamping block is fixedly connected to the end of the diaphragm spring away from the electro-hydraulic push rod, and the movable clamping block is slidably installed on the turntable;

[0016] A fixed clamping block, the fixed clamping block is fixedly installed on the turntable, and the movable clamping block is arranged opposite to the fixed clamping block;

[0017] A bearing platform, the bearing platform penetrates and is slidably installed on one end of the fixed clamping block close to the turntable, the bearing platform is slidably connected to the turntable, and the sliding direction of the bearing platform is along the telescopic direction of the electro-hydraulic push rod.

[0018] By adopting the above technical solutions, operating the controller causes the electro-hydraulic push rod to push the movable clamping block to move towards the fixed clamping block. At the same time, the movable clamping block pushes the bearing platform to move until the electromagnetic directional valve is clamped. The setting of the diaphragm spring enables the electromagnetic directional valve to be clamped while avoiding excessive clamping force and causing damage to the electromagnetic directional valve, realizing the automatic clamping of the electromagnetic directional valve and improving the detection efficiency.

[0019] Optionally, the hydraulic mechanism includes:

[0020] An oil tank, the oil tank is fixedly installed on the lower layer of the base;

[0021] An oil pump, the oil pump is arranged in the oil tank, and the oil pump is electrically connected to the controller;

[0022] An inlet pipe, one end of the inlet pipe penetrates through the oil tank and is communicated with the liquid outlet of the oil pump;

[0023] A distribution ring, the distribution ring is embedded on one end of the turntable away from the base, the liquid inlet of the distribution ring is rotationally connected and communicated with one end of the inlet pipe away from the oil tank; the number of liquid outlets of the distribution ring is consistent with the number of clamping mechanisms;

[0024] A plurality of connection components, a plurality of the connection components are all correspondingly arranged on the fixed clamping block, and the connection components are used for communicating with the liquid path of the electromagnetic liquid change valve;

[0025] A liquid return component, the liquid return component is connected to the turntable, and the liquid return component is used for recycling the oil liquid into the oil tank.

[0026] By adopting the above technical solution, the controller controls the oil pump to start, so that the oil in the fuel tank flows through the liquid inlet pipe into the distribution ring, and then flows into six connecting components respectively, and then flows through the liquid path of the electromagnetic reversing valve. At the same time, six electromagnetic reversing valves are tested, which is beneficial to improving the detection efficiency.

[0027] Optionally, the connecting component includes:

[0028] A first dovetail groove, which is opened at one end of the fixed clamp block close to the movable clamp block;

[0029] A first slider, which is slidably installed in the first dovetail groove;

[0030] A first liquid path, which is opened on the first slider. One end of the first liquid path is located at one end of the first slider close to the movable clamp block, and the other end of the first liquid path is located on the side wall of the first slider;

[0031] A first bellows, one end of which is communicated with the liquid outlet of the distribution ring, and the other end of which is communicated with one end of the first liquid path located on the side wall of the first slider;

[0032] A second slider, which is slidably installed in the first dovetail groove;

[0033] A second liquid path, which is opened on the second slider. One end of the second liquid path is located at one end of the second slider close to the movable clamp block, and the other end of the second liquid path is located on the side wall of the second slider. One end of the first liquid path located on the side wall of the first slider and one end of the second liquid path located on the side wall of the second slider are far away from each other;

[0034] A second bellows, one end of which is communicated with one end of the second liquid path located on the side wall of the second slider; the other end of the second bellows is connected with the liquid return component;

[0035] A second dovetail groove, which is opened on the movable clamp block, and the first dovetail groove is arranged opposite to the second dovetail groove;

[0036] A third slider, which is slidably installed in the second dovetail groove;

[0037] A third liquid path, which is opened on the third slider. One end of the third liquid path is located at one end of the third slider close to the fixed clamp block, and the other end of the third liquid path is located on the side wall of the third slider;

[0038] The fourth slider is slidably mounted in the second dovetail groove;

[0039] The fourth liquid path is opened on the fourth slider. One end of the fourth liquid path is located at one end of the fourth slider close to the fixed clamping block, and the other end of the fourth liquid path is located on the side wall of the fourth slider. One end of the third liquid path located on the side wall of the third slider is close to one end of the fourth liquid path located on the side wall of the fourth slider;

[0040] The third bellows, one end of the third bellows is communicated with one end of the third liquid path located on the third slider, and the other end of the third bellows is communicated with one end of the fourth liquid path located on the fourth slider;

[0041] Four quick-change joints. One ends of the four quick-change joints are respectively detachably connected and communicated with one end of the first liquid path located at one end of the first slider close to the movable clamping block, one end of the second liquid path located at one end of the second slider close to the movable clamping block, one end of the third liquid path located at one end of the third slider close to the fixed clamping block, and one end of the fourth liquid path located at one end of the fourth slider close to the fixed clamping block.

[0042] By adopting the above technical solution, the quick-change joint with adjustable position enables the operator to quickly adjust according to electromagnetic directional control valves of different specifications, shortens the debugging time required for changing product specifications, and is beneficial to improving the detection efficiency.

[0043] Optionally, the liquid return assembly includes:

[0044] The liquid return groove is opened on the base, and the liquid return groove is annular;

[0045] The liquid return ring, the outer wall of the liquid return ring is rotatably mounted on the side wall of the liquid return groove, the inner wall of the liquid return ring is fixedly connected with the side wall of the turntable, and the liquid return ring is away from the bottom wall of the liquid return groove;

[0046] The first liquid return pipe, one end of the first liquid return pipe is communicated with one end of the second liquid path located on the side wall of the second slider, and the other end of the first liquid return pipe penetrates through the liquid return ring and is communicated with the liquid return groove;

[0047] The second liquid return pipe, one end of the second liquid return pipe penetrates through the turntable and is communicated with the liquid return groove, and the other end of the second liquid return pipe penetrates through the fuel tank and is communicated with the inside of the fuel tank.

[0048] By adopting the above technical solution, when the turntable rotates, the liquid return ring also rotates accordingly, which will not affect the inflow of the oil liquid from the first liquid return pipe into the liquid return tank, avoiding the repeated addition of the oil liquid in the fuel tank during the test process, and being beneficial to improving the detection efficiency.

[0049] Optionally, the control mechanism further includes:

[0050] A plurality of flow solenoid valves, the plurality of flow solenoid valves are fixedly installed in one-to-one correspondence with the liquid outlet of the distribution ring, the liquid inlet of the flow solenoid valve is communicated with the liquid outlet of the distribution ring, the liquid outlet of the flow solenoid valve is communicated with one end of the first bellows away from the first slider, and the plurality of flow solenoid valves are all electrically connected to the controller;

[0051] A plurality of auxiliary components, the plurality of auxiliary components are arranged on the carrier table in one-to-one correspondence, and the auxiliary components are used to control the start and stop of the flow solenoid valve.

[0052] By adopting the above technical solution, when the movable clamping block and the fixed clamping block jointly clamp the electromagnetic directional valve, the auxiliary component is triggered, the flow solenoid valve is opened, the oil liquid in the distribution ring flows through the flow solenoid valve and the first bellows into the electromagnetic directional valve, and the electromagnetic directional valve is tested, avoiding manual intervention and being beneficial to improving the detection efficiency.

[0053] Optionally, the auxiliary component includes:

[0054] A storage groove, the storage groove is opened on the side wall of the carrier table away from the fixed clamping block;

[0055] A switch button, the switch button is embedded in the bottom wall of the storage groove, and the switch button is electrically connected to the flow solenoid valve;

[0056] A lever, one end of the lever is hinged on the side wall of the storage groove close to the fixed clamping block, and the lever can completely enter the storage groove;

[0057] A spring, one end of the spring is fixedly connected to the bottom wall of the storage groove, the spring is sleeved on the switch button, and the other end of the spring is fixedly connected to the end of the switch button away from the bottom wall of the storage groove.

[0058] By adopting the above technical solution, the carrier table moves, so that the lever enters the storage groove under the action of the fixed clamping block, the switch button is triggered, and the flow solenoid valve is started. At the same time, the spring is compressed. When the electro-hydraulic push rod drives the movable clamping block to move away from the fixed clamping block, the storage groove gradually moves away from the fixed clamping block, so that the lever no longer abuts against the fixed clamping block. Under the action of the spring, the lever can return to the previous state to prepare for the next experiment, which is beneficial to improving the detection efficiency.

[0059] Optionally, the protection mechanism includes:

[0060] A protective cover, which is a hollow cylinder with one end open. The protective cover has its opening facing downwards and is fixedly installed on the turntable. The protective cover is coaxially arranged with the turntable;

[0061] A plurality of operation windows, which are evenly distributed and opened at one end of the protective cover away from the base; the operation windows are located in the vertical direction of the fixed clamp block, and the operation windows correspond to the fixed clamp block one by one;

[0062] A plurality of protective doors, which are all slidably installed at one end of the protective cover away from the base. The protective doors correspond to the operation windows one by one, and the protective doors can completely cover the operation windows;

[0063] A plurality of telescopic rods, the fixed ends of the plurality of telescopic rods are all fixedly installed at one end of the protective cover away from the base. The movable ends of the telescopic rods correspond to and are fixedly connected to the protective doors. The moving direction of the movable ends of the telescopic rods is the same as the sliding direction of the protective doors. The rodless cavity of the electro-hydraulic push rod is communicated with the rodless cavity of the telescopic rod.

[0064] By adopting the above technical solution, when the electro-hydraulic push rod pushes the movable clamp block towards the fixed clamp block to clamp the electromagnetic reversing valve, the air in the rod chamber of the electro-hydraulic push rod enters the rodless cavity of the telescopic rod, causing the movable end of the telescopic rod to extend and driving the protective door to slide, covering the operation window, thus avoiding the oil leakage and spraying during the test of the electromagnetic reversing valve and affecting the working area environment.

[0065] Optionally, the turntable is connected with a driving mechanism, and the driving mechanism includes:

[0066] A motor, which is fixedly installed on the upper layer of the base and is electrically connected to the controller;

[0067] A belt pulley, which is coaxially and fixedly installed at the output end of the motor;

[0068] A belt, which is jointly wound around the belt pulley and the side wall of the turntable.

[0069] By adopting the above technical solution, the controller controls the motor, the motor drives the belt pulley, the rotation of the belt pulley makes the belt move and drives the turntable to rotate, realizing the position switching between the six workstations on the turntable, which is beneficial to improving the detection efficiency.

[0070] In summary, the present application includes at least one of the following beneficial technical effects:

[0071] The arrangement of the diaphragm spring enables the electromagnetic directional valve to be clamped while preventing excessive clamping force that could damage the electromagnetic directional valve, achieving automatic clamping of the electromagnetic directional valve and improving the detection efficiency.

[0072] The carrier platform moves, causing the lever to enter the storage groove under the action of the fixed clamping block, triggering the switch button and starting the flow solenoid valve. At the same time, the spring is compressed. When the electro-hydraulic push rod drives the movable clamping block to move away from the fixed clamping block, the storage groove gradually moves away from the fixed clamping block, causing the lever to no longer abut against the fixed clamping block. Under the action of the spring, the lever can return to its previous state in preparation for the next experiment, which is beneficial to improving the detection efficiency.

[0073] The controller controls the motor, which drives the belt pulley. The rotation of the belt pulley causes the belt to move and drives the turntable to rotate, achieving position switching between the six stations on the turntable, which is beneficial to improving the detection efficiency. Description of the Drawings

[0074] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0075] Figure 2 is a structural display diagram of the clamping mechanism and the hydraulic mechanism of an embodiment of the present application;

[0076] Figure 3 is a structural display diagram of the connection component of an embodiment of the present application;

[0077] Figure 4 is an embodiment of the present application Figure 3 magnified view of part A;

[0078] Figure 5 is a structural display diagram of the auxiliary component of an embodiment of the present application;

[0079] Figure 6 is an embodiment of the present application Figure 5 magnified view of part B;

[0080] Figure 7 is an embodiment of the present application Figure 3 magnified view of part C.

[0081] Description of the Reference Numerals:

[0082] 1. Base;

[0083] 2. Turntable;

[0084] 3. Clamping mechanism; 31. Electro-hydraulic push rod; 32. Diaphragm spring; 33. Movable clamping block; 34. Fixed clamping block; 35. Carrier platform;

[0085] 4. Hydraulic mechanism; 41. Oil tank; 42. Oil pump; 43. Liquid inlet pipe; 44. Distribution ring; 45. Connection assembly; 4501. First dovetail groove; 4502. First slider; 4503. First liquid path; 4504. First bellows; 4505. Second slider; 4506. Second liquid path; 4507. Second bellows; 4508. Second dovetail groove; 4509. Third slider; 4510. Third liquid path; 4511. Fourth slider; 4512. Fourth liquid path; 4513. Third bellows; 4514. Quick-change joint; 46. Liquid return assembly; 461. Liquid return groove; 462. Liquid return ring; 463. First liquid return pipe; 464. Second liquid return pipe;

[0086] 5. Control mechanism; 51. Controller; 52. Flow solenoid valve; 53. Auxiliary assembly; 531. Storage groove; 532. Switch button; 533. Lever; 534. Spring;

[0087] 6. Protection mechanism; 61. Protective cover; 62. Operation window; 63. Protection door; 64. Telescopic rod;

[0088] 7. Driving mechanism; 71. Motor; 72. Pulley; 73. Belt. Specific embodiments

[0089] The following further elaborates on this application in conjunction with the attached Figure 1-7 drawings for a more detailed description.

[0090] The embodiments of this application disclose a fully automatic test bench for detecting electromagnetic directional control valves.

[0091] Referring to Figure 1 and Figure 2 , the fully automatic test bench for detecting electromagnetic directional control valves includes a base 1, and the base 1 is a double-layer structure. A turntable 2 is rotatably installed on the upper layer of the base 1. Six clamping mechanisms 3 are evenly distributed and fixedly installed at one end of the turntable 2 away from the base 1, and the clamping mechanisms 3 are used to clamp the electromagnetic directional control valves. The clamping mechanisms 3 are connected to a hydraulic mechanism 4, and the hydraulic mechanism 4 is fixedly connected to the base 1. The hydraulic mechanism 4 is used to provide the oil required in the test of the electromagnetic directional control valve.

[0092] Referring to Figure 1 , a protection mechanism 6 is fixedly installed at one end of the turntable 2 away from the base 1, and the protection mechanism 6 is used to prevent oil leakage; a control mechanism 5 is arranged on the base 1. The control mechanism 5 includes a controller 51, and the controller 51 is fixedly installed on the upper layer of the base 1. The control mechanism 5 is used to control the hydraulic mechanism 4 and the clamping mechanisms 3.

[0093] During use, the operator places the solenoid directional valve to be tested on the clamping mechanism 3, and then starts the clamping mechanism 3 and the hydraulic mechanism 4 by operating the controller 51. The clamping mechanism 3 can automatically clamp the solenoid directional valve. At the same time, the protection mechanism 6 starts to operate. After clamping, the hydraulic mechanism 4 is connected to the internal oil circuit of the solenoid directional valve, and the oil in the hydraulic mechanism 4 flows through the solenoid directional valve to test the solenoid directional valve. Compared with the traditional test device, it not only realizes the automatic clamping of the solenoid directional valve, but also the six-station design can test six solenoid directional valves simultaneously, which is beneficial to improving the detection efficiency.

[0094] Referring to Figure 2 , the clamping mechanism 3 includes an electro-hydraulic push rod 31. The fixed end of the electro-hydraulic push rod 31 is fixedly installed at one end of the turntable 2 close to the center of the circle. The movable end of the electro-hydraulic push rod 31 is along the radial direction of the turntable 2. The electro-hydraulic push rod 31 is electrically connected to the controller 51; a diaphragm spring 32 is fixedly installed on the movable end of the electro-hydraulic push rod 31. One end of the diaphragm spring 32 away from the electro-hydraulic push rod 31 is fixedly connected to a movable clamping block 33, and the movable clamping block 33 is slidably installed on the turntable 2.

[0095] Referring to Figure 2 , the clamping mechanism 3 further includes a fixed clamping block 34. The fixed clamping block 34 is fixedly installed on the turntable 2. The fixed clamping block 34 is arranged opposite to the movable clamping block 33; a bearing platform 35 is penetrated and slidably installed on one end of the fixed clamping block 34 close to the turntable 2. The bearing platform 35 is slidably connected to the turntable 2, and the sliding direction of the bearing platform 35 is along the telescopic direction of the electro-hydraulic push rod 31.

[0096] During use, the operator places the solenoid directional valve on the bearing platform 35 so that the solenoid directional valve abuts against the fixed clamping block 34. Then operate the controller 51 to make the electro-hydraulic push rod 31 operate, and move the movable clamping block 33 towards the fixed clamping block 34. At the same time, the movable clamping block 33 pushes the bearing platform 35 to move until the solenoid directional valve is clamped. The setting of the diaphragm spring 32 enables the solenoid directional valve to be clamped while avoiding excessive clamping force and causing damage to the solenoid directional valve, realizing the automatic clamping of the solenoid directional valve and improving the detection efficiency. The setting of the bearing platform 35 enables the test bench to detect solenoid directional valves of different specifications, avoiding the need to spend a lot of time adjusting the test bench when detecting solenoid directional valves of different specifications, which is beneficial to improving the detection efficiency.

[0097] Referring to Figure 2, the hydraulic mechanism 4 includes an oil tank 41, the oil tank 41 is fixedly installed on the lower layer of the base 1, a hydraulic pump 42 is arranged in the oil tank 41, the hydraulic pump 42 is electrically connected to the controller 51, a liquid inlet pipe 43 is communicated with the liquid outlet of the hydraulic pump 42, the liquid inlet pipe 43 penetrates through the top wall of the oil tank 41, and one end of the liquid inlet pipe 43 away from the hydraulic pump 42 is rotatably connected to the liquid inlet of a distribution ring 44, the distribution ring 44 is embedded on one end of the turntable 2 away from the base 1, and six liquid outlets are arranged on the distribution ring 44.

[0098] Refer to Figure 2 and Figure 3 , the hydraulic mechanism 4 further includes six connection components 45 and a liquid return component 46, the six connection components 45 are all correspondingly arranged on the fixed clamping block 34 one by one, and the connection component 45 is used for communicating with the liquid path of the electromagnetic directional valve; the liquid return component 46 is connected to the turntable 2, and the liquid return component 46 is used for recycling the oil liquid into the oil tank 41.

[0099] During use, the controller 51 controls the hydraulic pump 42 to start, so that the oil liquid in the oil tank 41 flows through the liquid inlet pipe 43 into the distribution ring 44, then flows into the connection component 45, and then flows through the liquid path of the electromagnetic directional valve to test the electromagnetic directional valve. After flowing out of the electromagnetic directional valve, it enters the liquid return component 46 and finally returns to the oil tank 41. By arranging six connection components 45, the six electromagnetic directional valves can be tested simultaneously, which is beneficial to improving the detection efficiency.

[0100] Refer to Figure 4 , the connection component 45 includes a first dovetail groove 4501; the first dovetail groove 4501 is opened at one end of the fixed clamping block 34 close to the movable clamping block 33, a first slider 4502 and a second slider 4505 are slidably installed in the first dovetail groove 4501, a first liquid path 4503 is opened on the first slider 4502, one end of the first liquid path 4503 is located at one end of the first slider 4502 close to the movable clamping block 33, the other end of the first liquid path 4503 is located on the side wall of the first slider 4502, a first corrugated pipe 4504 is communicated with the liquid outlet of the distribution ring 44, and one end of the first corrugated pipe 4504 away from the distribution ring 44 is communicated with one end of the first liquid path 4503 located on the side wall of the first slider 4502.

[0101] Refer to Figure 4, a second liquid passage 4506 is formed in the second slider 4505. One end of the second liquid passage 4506 is located at one end of the second slider 4505 close to the movable clamping block 33, and the other end of the second liquid passage 4506 is located on the side wall of the second slider 4505. One end of the first liquid passage 4503 located on the side wall of the first slider 4502 is far away from one end of the second liquid passage 4506 located on the side wall of the second slider 4505; One end of the second liquid passage 4506 located on the side wall of the second slider 4505 is communicated with a second corrugated pipe 4507, and the end of the second corrugated pipe 4507 far away from the second slider 4505 is connected to the liquid return assembly 46.

[0102] Referring to Figure 4 , the connecting assembly 45 further includes a second dovetail groove 4508 formed in the movable clamping block 33, and the first dovetail groove 4501 and the second dovetail groove 4508 are arranged oppositely. A third slider 4509 and a fourth slider 4511 are slidably installed in the second dovetail groove 4508; A third liquid passage 4510 is formed in the third slider 4509. One end of the third liquid passage 4510 is located at one end of the third slider 4509 close to the fixed clamping block 34; The other end of the third liquid passage 4510 is located on the side wall of the third slider 4509; A fourth liquid passage 4512 is formed in the fourth slider 4511. One end of the fourth liquid passage 4512 is located at one end of the fourth slider 4511 close to the fixed clamping block 34, and the other end of the fourth liquid passage 4512 is located on the side wall of the fourth slider 4511. One end of the third liquid passage 4510 located on the side wall of the third slider 4509 is close to one end of the fourth liquid passage 4512 located on the side wall of the fourth slider 4511; A third corrugated pipe 4513 is communicated with the mutually close ends of the third liquid passage 4510 and the fourth liquid passage 4512; One end of the first liquid passage 4503 located at one end of the first slider 4502 close to the movable clamping block 33, one end of the second liquid passage 4506 located at one end of the second slider 4505 close to the movable clamping block 33, one end of the third liquid passage 4510 located at one end of the third slider 4509 close to the fixed clamping block 34, and one end of the fourth liquid passage 4512 located at one end of the fourth slider 4511 close to the fixed clamping block 34 can be detachably connected and communicated with a quick-change joint 4514.

[0103] During use, after placing the electromagnetic directional valve on the carrier table 35, adjust the positions of the first slider 4502 and the second slider 4505 such that the quick-change joint 4514 connected to the first liquid path 4503 is in communication with the liquid inlet of the electromagnetic directional valve, and the quick-change joint 4514 connected to the second liquid path 4506 is in communication with the liquid outlet of the electromagnetic directional valve. Adjust the positions of the third slider 4509 and the fourth slider 4511 such that the quick-change joint 4514 connected to the third liquid path 4510 and the quick-change joint 4514 connected to the fourth liquid path 4512 are coaxial with the two reversing ports of the electromagnetic directional valve. When the movable clamping block 33 moves towards the fixed clamping block 34 such that the quick-change joint 4514 connected to the third liquid path 4510 and the quick-change joint 4514 connected to the fourth liquid path 4512 can abut against the two reversing ports of the electromagnetic directional valve, the movable clamping block 33 continues to move such that the quick-change joint 4514 connected to the third liquid path 4510 and the quick-change joint 4514 connected to the fourth liquid path 4512 can be in communication with the two reversing ports of the electromagnetic directional valve, completing the liquid path connection between the hydraulic mechanism 4 and the electromagnetic directional valve, achieving the simultaneous testing of six electromagnetic directional valves, which is conducive to improving the detection efficiency. At the same time, the position-adjustable quick-change joint 4514 enables the operator to quickly adjust according to electromagnetic directional valves of different specifications, shortening the debugging time required for changing product specifications, which is conducive to improving the detection efficiency.

[0104] Referring to Figure 3 , the liquid return assembly 46 includes a liquid return tank 461 which is provided at one end of the base 1 close to the turntable 2, and the liquid return tank 461 is annular; the outer wall of a liquid return ring 462 is rotatably mounted at one end of the side wall of the liquid return tank 461 away from the bottom wall of the liquid return tank 461, and the inner wall of the liquid return ring 462 is fixedly connected to the side wall of the turntable 2.

[0105] Referring to Figure 3 , the liquid return assembly 46 further includes a first liquid return pipe 463 and a second liquid return pipe 464. One end of the first liquid return pipe 463 is in communication with one end of the second liquid path 4506 on the side wall of the second slider 4505; the other end of the first liquid return pipe 463 penetrates through the liquid return ring 462 and is in communication with the liquid return tank 461; one end of the second liquid return pipe 464 penetrates through the turntable 2 and is in communication with the liquid return tank 461, and the other end of the second liquid return pipe 464 penetrates through the fuel tank 41 and is in communication with the interior of the fuel tank 41.

[0106] During use, the oil flowing out of the electromagnetic directional valve flows through the first liquid return pipe 463 into the liquid return tank 461, and then flows back into the fuel tank 41 through the second liquid return pipe 464, completing the recovery of the oil. When the turntable 2 rotates, the liquid return ring 462 also rotates accordingly, without affecting the flow of oil from the first liquid return pipe 463 into the liquid return tank 461, avoiding the repeated addition of oil in the fuel tank 41 during the test, which is conducive to improving the detection efficiency.

[0107] Referring to Figure 5 、 Figure 6 and Figure 7 , the control mechanism 5 further includes six flow solenoid valves 52 and six auxiliary components 53. The six flow solenoid valves 52 correspond to the liquid outlets of the distribution ring 44 one by one and are fixedly installed. The liquid inlet of the flow solenoid valve 52 is communicated with the liquid outlet of the distribution ring 44, and the liquid outlet of the flow solenoid valve 52 is communicated with one end of the first bellows 4504 away from the first slider 4502. The multiple flow solenoid valves 52 are all electrically connected to the controller 51. The six auxiliary components 53 are arranged on the carrier 35 one by one, and the auxiliary components 53 are used to control the start and stop of the flow solenoid valves 52.

[0108] During use, when the movable clamping block 33 and the fixed clamping block 34 jointly clamp the electromagnetic directional valve, the auxiliary component 53 is triggered under the action of the fixed clamping block 34, so that the flow solenoid valve 52 is opened. The oil in the distribution ring 44 can flow through the flow solenoid valve 52 and the first bellows 4504 into the electromagnetic directional valve, and the electromagnetic directional valve is tested, avoiding manual intervention and being beneficial to improving the detection efficiency.

[0109] Referring to Figure 6 , the auxiliary component 53 includes a receiving groove 531, and the receiving groove 531 is opened on the side wall of the carrier 35 at the end away from the fixed clamping block 34; a switch button 532 is embedded on the bottom wall of the receiving groove 531, and the switch button 532 is electrically connected to the flow solenoid valve 52; a lever 533 is hinged on the side wall of the receiving groove 531 near the fixed clamping block 34, and the lever 533 can completely enter the receiving groove 531; a spring 534 is sleeved on the switch button 532, one end of the spring 534 is fixedly connected to the bottom wall of the receiving groove 531, and the other end of the spring 534 is fixedly connected to the end of the switch button 532 away from the bottom wall of the receiving groove 531.

[0110] During use, the carrier 35 moves away from the electro-hydraulic push rod 31 under the action of the movable clamping block 33. When the carrier 35 moves to the position where the side wall of the receiving groove 531 coincides with the side wall of the fixed clamping block 34, the carrier 35 continues to move, so that the lever 533 enters the receiving groove 531 under the action of the fixed clamping block 34, triggering the switch button 532 and starting the flow solenoid valve 52. At this time, the oil in the distribution ring 44 can flow through the flow solenoid valve 52 and the first bellows 4504 into the electromagnetic directional valve, and the electromagnetic directional valve is tested, avoiding manual intervention. At the same time, the spring 534 is compressed, so that after the experiment is completed, when the electro-hydraulic push rod 31 drives the movable clamping block 33 to move away from the fixed clamping block 34, the receiving groove 531 gradually moves away from the fixed clamping block 34, so that the lever 533 no longer abuts against the fixed clamping block 34. Under the action of the spring 534, the lever 533 can return to the previous state, preparing for the next experiment and being beneficial to improving the detection efficiency.

[0111] Referring to Figure 1 , the protection structure includes a protective cover 61. The protective cover 61 is a hollow cylinder with one end open. The protective cover 61 has its opening facing downwards and is fixedly installed on the turntable 2. The protective cover 61 is coaxially arranged with the turntable 2. Six operation windows 62 are evenly distributed and opened at one end of the protective cover 61 away from the base 1. The operation windows 62 are located in the vertical direction of the fixed clamping block 34, and the operation windows 62 correspond to the fixed clamping block 34 one by one. Six protective doors 63 are slidably installed at one end of the protective cover 61 away from the base 1. The protective doors 63 correspond to the operation windows 62 one by one, and the protective doors 63 can completely block the operation windows 62.

[0112] Referring to Figure 1 , the protection structure further includes six telescopic rods 64. The fixed ends of the six telescopic rods 64 are fixedly installed at one end of the protective cover 61 away from the base 1. The movable ends of the telescopic rods 64 correspond to and are fixedly connected to the protective doors 63. The moving direction of the movable ends of the telescopic rods 64 is the same as the sliding direction of the protective doors 63. The rodless cavity of the electro-hydraulic push rod 31 is communicated with the rodless cavity of the telescopic rod 64.

[0113] When the electro-hydraulic push rod 31 pushes the movable clamping block 33 towards the fixed clamping block 34 to clamp the electromagnetic directional valve, the air in the rod cavity of the electro-hydraulic push rod 31 enters the rodless cavity of the telescopic rod 64, causing the movable end of the telescopic rod 64 to extend and driving the protective door 63 to slide, blocking the operation window 62, thus avoiding the oil leakage and spraying during the test of the electromagnetic directional valve and affecting the working area environment.

[0114] Referring to Figure 1 , the turntable 2 is connected with a driving mechanism 7. The driving mechanism 7 includes a motor 71. The motor 71 is fixedly installed on the upper layer of the base 1. The motor 71 is electrically connected to the controller 51. A pulley 72 is coaxially and fixedly installed at the output end of the motor 71. A belt 73 is wound around the pulley 72 and the side wall of the turntable 2 together.

[0115] During use, the controller 51 controls the motor 71 to start. The motor 71 drives the pulley 72 to rotate. The rotation of the pulley 72 causes the belt 73 to move and drives the turntable 2 to rotate, realizing the position switching between the six workstations on the turntable 2, which is beneficial to improving the detection efficiency.

[0116] The implementation principle of a full-automatic test bench for detecting electromagnetic reversing valves in the embodiments of the present application is as follows: During use, an operator places the electromagnetic reversing valve on the bearing platform 35, adjusts the positions of the first slider 4502 and the second slider 4505 so that the quick-change joint 4514 connected to the first liquid path 4503 is communicated with the liquid inlet of the electromagnetic reversing valve, and the quick-change joint 4514 connected to the second liquid path 4506 is communicated with the liquid outlet of the electromagnetic reversing valve; adjusts the positions of the third slider 4509 and the fourth slider 4511 so that the quick-change joint 4514 connected to the third liquid path 4510 and the quick-change joint 4514 connected to the fourth liquid path 4512 are coaxial with the two reversing ports of the electromagnetic reversing valve. Then, the controller 51 is operated to make the electro-hydraulic push rod 31 and the oil pump 42 run, and the electro-hydraulic push rod 31 moves the movable clamping block 33 towards the fixed clamping block 34. At the same time, the movable clamping block 33 pushes the bearing platform 35 to move until the electromagnetic reversing valve is clamped. At this time, the quick-change joint 4514 connected to the third liquid path 4510 and the quick-change joint 4514 connected to the fourth liquid path 4512 are communicated with the two reversing ports of the electromagnetic reversing valve. During this period, the shift lever 533 enters the storage groove 531 under the action of the fixed clamping block 34, so that the switch button 532 is triggered, the flow solenoid valve 52 is started, and the oil liquid in the distribution ring 44 can flow through the flow solenoid valve 52 and the first bellows 4504 into the electromagnetic reversing valve and conduct an experiment on the electromagnetic reversing valve. During this process, the clamping of the electromagnetic reversing valve and the start and stop of the flow solenoid valve 52 avoid manual intervention, significantly improving the detection efficiency.

[0117] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A fully automatic test bench for detecting electromagnetic directional control valves, characterized in that, Comprising: A base (1), the base (1) being a double-layer structure; A turntable (2), the turntable (2) being rotatably mounted on the upper layer of the base (1); A plurality of clamping mechanisms (3), the plurality of clamping mechanisms (3) being evenly distributed and fixedly mounted on one end of the turntable (2) away from the base (1), the clamping mechanism (3) being used to clamp an electromagnetic directional valve; A hydraulic mechanism (4), the hydraulic mechanism (4) being fixedly connected to the base (1), the plurality of clamping mechanisms (3) being connected to the hydraulic mechanism (4), the hydraulic mechanism (4) being used to provide the oil required in the electromagnetic directional valve test; A protection mechanism (6), the protection mechanism (6) being fixedly mounted on one end of the turntable (2) away from the base (1), the protection mechanism (6) being used to prevent oil leakage; A control mechanism (5), the control mechanism (5) being connected to the base (1), the control mechanism (5) including a controller (51), the controller (51) being fixedly mounted on the upper layer of the base (1); the control mechanism (5) being used to control the hydraulic mechanism (4) and the clamping mechanism (3); The clamping mechanism (3) includes: An electro-hydraulic push rod (31), the fixed end of the electro-hydraulic push rod (31) being fixedly mounted on one end of the turntable (2) close to the center of the circle, the movable end of the electro-hydraulic push rod (31) being along the radial direction of the turntable (2), the electro-hydraulic push rod (31) being electrically connected to the controller (51); A diaphragm spring (32), one end of the diaphragm spring (32) being fixedly connected to the movable end of the electro-hydraulic push rod (31); A movable clamping block (33), one end of the movable clamping block (33) being fixedly connected to the end of the diaphragm spring (32) away from the electro-hydraulic push rod (31), the movable clamping block (33) being slidably mounted on the turntable (2); A fixed clamping block (34), the fixed clamping block (34) being fixedly mounted on the turntable (2), the movable clamping block (33) being arranged opposite to the fixed clamping block (34); A bearing platform (35), the bearing platform (35) passing through and being slidably mounted on one end of the fixed clamping block (34) close to the turntable (2), the bearing platform (35) being slidably connected to the turntable (2), the sliding direction of the bearing platform (35) being along the telescopic direction of the electro-hydraulic push rod (31); The control mechanism (5) further includes: a plurality of flow solenoid valves (52) and a plurality of auxiliary components (53), the plurality of flow solenoid valves (52) being electrically connected to the controller (51), the plurality of auxiliary components (53) being arranged in one-to-one correspondence on the bearing platform (35), the auxiliary component (53) being used to control the start and stop of the flow solenoid valve (52); The auxiliary component (53) includes: a storage groove (531) opened on the side wall of the carrying platform (35) at the end far from the fixed clamping block (34); a switch button (532) embedded in the bottom wall of the storage groove (531), and the switch button (532) is electrically connected to the flow solenoid valve (52); a lever (533) with one end hinged to the side wall of the storage groove (531) near the fixed clamping block (34), and the lever (533) can completely enter the storage groove (531); a spring (534) with one end fixedly connected to the bottom wall of the storage groove (531), the spring (534) sleeved on the switch button (532), and the other end of the spring (534) fixedly connected to the end of the switch button (532) far from the bottom wall of the storage groove (531).

2. The full-automatic test bench for detecting electromagnetic reversing valves according to claim 1, characterized in that The hydraulic mechanism (4) includes: an oil tank (41) fixedly installed on the lower layer of the base (1); an oil pump (42) disposed in the oil tank (41), and the oil pump (42) is electrically connected to the controller (51); a liquid inlet pipe (43) with one end passing through the oil tank (41) and communicating with the liquid outlet of the oil pump (42); a distribution ring (44) embedded in the end of the turntable (2) far from the base (1), and the liquid inlet of the distribution ring (44) is rotationally connected and communicated with the end of the liquid inlet pipe (43) far from the oil tank (41); the number of liquid outlets of the distribution ring (44) is the same as the number of the clamping mechanisms (3); a plurality of connection components (45), and the plurality of connection components (45) are respectively arranged on the fixed clamping block (34) one by one, and the connection components (45) are used for liquid path communication with the electromagnetic liquid change valve; a liquid return component (46) connected to the turntable (2), and the liquid return component (46) is used for recycling the oil to the oil tank (41).

3. The full-automatic test bench for detecting electromagnetic directional control valves according to claim 2, characterized in that, The connection component (45) includes: a first dovetail groove (4501) opened on the end of the fixed clamping block (34) close to the movable clamping block (33); a first slider (4502) slidably installed in the first dovetail groove (4501); a first liquid path (4503) opened on the first slider (4502), one end of the first liquid path (4503) is located at the end of the first slider (4502) close to the movable clamping block (33), and the other end of the first liquid path (4503) is located on the side wall of the first slider (4502). The first bellows tube (4504), one end of the first bellows tube (4504) is communicated with the liquid outlet of the distribution ring (44), and the other end of the first bellows tube (4504) is communicated with one end of the first liquid path (4503) located on the side wall of the first slider (4502); The second slider (4505) is slidably mounted in the first dovetail groove (4501); The second liquid path (4506) is formed on the second slider (4505). One end of the second liquid path (4506) is located at one end of the second slider (4505) close to the movable clamping block (33), and the other end of the second liquid path (4506) is located on the side wall of the second slider (4505). One end of the first liquid path (4503) located on the side wall of the first slider (4502) and one end of the second liquid path (4506) located on the side wall of the second slider (4505) are far away from each other; The second bellows tube (4507), one end of the second bellows tube (4507) is communicated with one end of the second liquid path (4506) located on the side wall of the second slider (4505); the other end of the second bellows tube (4507) is connected to the liquid return assembly (46); The second dovetail groove (4508) is formed on the movable clamping block (33), and the first dovetail groove (4501) is arranged opposite to the second dovetail groove (4508); The third slider (4509) is slidably mounted in the second dovetail groove (4508); The third liquid path (4510) is formed on the third slider (4509). One end of the third liquid path (4510) is located at one end of the third slider (4509) close to the fixed clamping block (34), and the other end of the third liquid path (4510) is located on the side wall of the third slider (4509); The fourth slider (4511) is slidably mounted in the second dovetail groove (4508); The fourth liquid path (4512) is formed on the fourth slider (4511). One end of the fourth liquid path (4512) is located at one end of the fourth slider (4511) close to the fixed clamping block (34), and the other end of the fourth liquid path (4512) is located on the side wall of the fourth slider (4511). One end of the third liquid path (4510) located on the side wall of the third slider (4509) and one end of the fourth liquid path (4512) located on the side wall of the fourth slider (4511) are close to each other; A third bellows pipe (4513), one end of the third bellows pipe (4513) is communicated with one end of the third liquid path (4510) located on the third slider (4509), and the other end of the third bellows pipe (4513) is communicated with one end of the fourth liquid path (4512) located on the fourth slider (4511); Four quick-change connectors (4514), one ends of the four quick-change connectors (4514) are respectively detachably connected and communicated with one end of the first liquid path (4503) located on one end of the first slider (4502) close to the movable clamping block (33), one end of the second liquid path (4506) located on one end of the second slider (4505) close to the movable clamping block (33), one end of the third liquid path (4510) located on one end of the third slider (4509) close to the fixed clamping block (34), and one end of the fourth liquid path (4512) located on one end of the fourth slider (4511) close to the fixed clamping block (34).

4. The fully automatic test bench for detecting electromagnetic reversing valves according to claim 3, characterized in that, The liquid return assembly (46) includes: A liquid return groove (461), the liquid return groove (461) is opened on the base (1), and the liquid return groove (461) is annular; A liquid return ring (462), the outer wall of the liquid return ring (462) is rotatably installed on the side wall of the liquid return groove (461), the inner wall of the liquid return ring (462) is fixedly connected with the side wall of the turntable (2), and the liquid return ring (462) is away from the bottom wall of the liquid return groove (461); A first liquid return pipe (463), one end of the first liquid return pipe (463) is communicated with one end of the second liquid path (4506) located on the side wall of the second slider (4505), and the other end of the first liquid return pipe (463) penetrates through the liquid return ring (462) and is communicated with the liquid return groove (461); A second liquid return pipe (464), one end of the second liquid return pipe (464) penetrates through the turntable (2) and is communicated with the liquid return groove (461), and the other end of the second liquid return pipe (464) penetrates through the fuel tank (41) and is communicated with the inside of the fuel tank (41).

5. The full-automatic test bench for detecting electromagnetic reversing valves according to claim 3, characterized in that, A plurality of the flow solenoid valves (52) are in one-to-one correspondence with the liquid outlets of the distribution ring (44) and are fixedly installed, the liquid inlets of the flow solenoid valves (52) are communicated with the liquid outlets of the distribution ring (44), and the liquid outlets of the flow solenoid valves (52) are communicated with one end of the first bellows pipe (4504) away from the first slider (4502).

6. The fully automatic test bench for detecting electromagnetic directional control valves according to claim 1, characterized in that, The protection mechanism (6) includes: A protective cover (61), the protective cover (61) is a hollow cylinder with one end open, the protective cover (61) opens downward and is fixedly installed on the turntable (2), and the protective cover (61) is coaxially arranged with the turntable (2); A plurality of operation windows (62), and the plurality of operation windows (62) are evenly distributed and opened at one end of the protective cover (61) away from the base (1); the operation windows (62) are located in the vertical direction of the fixed clamping block (34), and the operation windows (62) correspond to the fixed clamping blocks (34) one by one; A plurality of protective doors (63), and the plurality of protective doors (63) are all slidably installed at one end of the protective cover (61) away from the base (1), the protective doors (63) correspond to the operation windows (62) one by one, and the protective doors (63) can completely block the operation windows (62); A plurality of telescopic rods (64), and the fixed ends of the plurality of telescopic rods (64) are all fixedly installed at one end of the protective cover (61) away from the base (1), the movable ends of the telescopic rods (64) correspond to the protective doors (63) one by one and are fixedly connected, the moving direction of the movable ends of the telescopic rods (64) is the same as the sliding direction of the protective doors (63), and the rodless cavity of the electro-hydraulic push rod (31) is communicated with the rodless cavity of the telescopic rod (64).

7. The fully automatic test bench for detecting electromagnetic reversing valves according to claim 1, characterized in that, The turntable (2) is connected with a driving mechanism (7), and the driving mechanism (7) includes: A motor (71), and the motor (71) is fixedly installed on the upper layer of the base (1), and the motor (71) is electrically connected to the controller (51); A belt pulley (72), and the belt pulley (72) is coaxially and fixedly installed at the output end of the motor (71); A belt (73), and the belt (73) is wound around the belt pulley (72) and the side wall of the turntable (2) together.

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